Improve YouTube! (Open-Source for YouTube)
Make YouTube tidy & powerful! YouTube Player Size Theme Quality Auto HD Colors Playback Speed Style ad block Playlist Channel H.264
13,113 users
ModHeader
Add and modify the HTTP request headers and response headers. Use ModHeader to: - Add / modify request and response headers - Add / modify cookies - Multi-profile support - Filtering based on URL, tab, or window - Export and share profiles
16,040 users
Age Restriction Bypass for YouTube™
Extension to bypass YouTube's age verification and watch age restricted videos without having to sign in.
15,871 users
Auto Refresh Page
Refresh web pages automatically. Auto-refresh and page monitor with specified time intervals.
11,657 users
google translate element
Automatically inserts Google Translate Element into the page. Translate the entire page without leaving page or opening a new tab.
10,214 users
Bypass Paywalls Clean (c)
Bypass Paywalls of (custom) news sites. Custom add-on version with default access to all sites (to enable custom sites on Firefox Android which has no optional permissions)
5,659 users
Youtube to MP3 Converter & Downloader
Firefox extension to convert and download Youtube videos for free in MP3 format. This addon includes a button on any YouTube View Page and allows you to convert the YouTube Video to a mp3 file with just one click.
4,208 users
AddToAny: Share Anywhere
Share to Facebook, Twitter, WhatsApp, email, and any other sharing or saving service quickly and easily with one share button.
3,985 users
Google Dark Theme
A modern dark theme for Google Search, Images, Translate. Permissions found in manifest.json in the GitHub repository.
3,338 users
Modern for Wikipedia
A redesigned user interface for Wikipedia. Enhance your Wikipedia experience with a beautiful, clean, modern design that's fully customizable.
3,171 users
Script Blocker Ultimate (NoScript, Disable JS)
Best Script Blocker for Firefox. (Best in Performance, This addon does NOT track user activities same as others)
2,631 users
Website IP
Simple add-on that displays the current website IP address without a third party service. Converting the current tabs domain name to IPv4 & IPv6 via DNS lookup.
1,825 users
Roblox Server Finder
A server finder that attempts to find a server with a specified amount of players
1,611 users
Immersive Translate - 沉浸式翻译 - 双语对照网页翻译
Web bilingual translation, completely free to use, supports Deepl/Google/Bing/Tencent/Youdao, etc. it also works on iOS Safari.
1,445 users
ContextSearch web-ext
Select text and search from the context menu or a tiled popup using any of your installed search engines. Add new search engines with a right-click, edit favicons and query strings. POST compatible, simple UI, highly configurable. For FF 57+
1,392 users
GitHub Dark Theme
A dark theme for all of GitHub based on Atom One Dark.Source Code: https://github.com/poychang/github-dark-theme
1,298 users
notion-enhancer
an enhancer/customiser for the all-in-one productivity workspace notion.so
1,293 users
Enable Selection and Copy
Force enable text selection and copy. (mod by Gary) This is modded from another well-known addon and makes it function on local files also. Nothing else changed.
1,067 users
